Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Que dia da semana tem um contra do kashima antlers?
 ###Tabelas: CREATE TABLE 1970–1979 (1970–1979_id AUTO_INCREMENT PRIMARY KEY, January VARCHAR, February VARCHAR, March VARCHAR, April VARCHAR, June VARCHAR, July VARCHAR, August VARCHAR, September VARCHAR, October VARCHAR, November VARCHAR, December VARCHAR) CREATE TABLE singles:_21_17_titles_4_runner-ups (singles:_21_17_titles_4_runner-ups_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Year INT, Championship VARCHAR, Surface VARCHAR, Opponent VARCHAR, Score VARCHAR) CREATE TABLE attendance_at_home_games (attendance_at_home_games_id AUTO_INCREMENT PRIMARY KEY, Round VARCHAR, Date VARCHAR, Against VARCHAR, Score AUFC – Away VARCHAR, Attendance INT, Weekday VARCHAR) CREATE TABLE operational (operational_id AUTO_INCREMENT PRIMARY KEY, Number & Name VARCHAR, Description VARCHAR, Livery VARCHAR, Owner(s) VARCHAR, Date INT) CREATE TABLE singles_12–8 (singles_12–8_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Tournament VARCHAR, Surface VARCHAR, Opponent VARCHAR, Score VARCHAR)  
SELECT Weekday FROM attendance_at_home_games WHERE Against = kashima antlers